Patent application number | Description | Published |
20110059380 | POLYMER ELECTROLYTE FUEL CELL STACK - A fuel cell stack comprising: a cell stack body having stacked single cells and a manifold for supplying or discharging a fluid to the stacked single cells, the single cell including a membrane electrode assembly and a separator sandwiching the membrane electrode assembly; an end plate stacked onto the cell stack body and having a through-hole along the stacking direction of the cell stack body; and a fluid tube body inserted detachably into the through-hole so as to pass through the end plate, the fluid tube body being connected to the manifold, wherein a part of the outer surface of the fluid tube body opposite to the inner surface of the through-hole is separated from the inner surface of the through-hole. | 03-10-2011 |
20110091786 | FUEL CELL STACK - Disclosed is a fuel cell stack which includes: a cell assembly formed of stacked unit cells, each composed of a membrane electrolyte assembly and separators which sandwich the membrane electrolyte assembly; a pair of collector plates A and B which sandwiches the cell assembly; a pair of end plates A and B which sandwiches the cell assembly and the collector plates; and an elastic member disposed between end plate A and collector plate A, wherein end plate A has a convexed portion and a concaved portion on a surface facing collector plate A, and the concaved portion of end plate A holds therein the elastic member, and a bottom surface of the concaved portion includes a second convexed portion and a second concaved portion. | 04-21-2011 |
20110207018 | SOLID POLYMER FUEL CELL - A polymer electrolyte fuel cell includes a membrane electrode assembly including a polymer electrolyte membrane and a pair of catalyst electrodes sandwiching the polymer electrolyte membrane; a pair of separators sandwiching the membrane electrode assembly, the separators each including linear reaction gas channels defined by linear channel ribs, a reaction gas supply manifold hole, and a reaction gas discharge manifold hole; and an inlet gas distribution section for connecting the reaction gas supply manifold hole and the reaction gas channels, wherein the inlet gas distribution section includes n (where n is an integer of 2 or more) distribution ribs for partitioning the inlet gas distribution section into a plurality of spaces, the distribution ribs each having a longitudinal axis perpendicular to a longitudinal axis of the linear reaction gas channels, the distribution ribs each having two or more slits provided therein, the slits being in parallel to the longitudinal axis of the linear reaction channels, when, among the distribution ribs, the distribution rib positioned closest to the reaction gas supply manifold hole is considered as a first distribution rib and the distribution rib positioned closest to the reaction gas channels as an nth distribution rib, and when, among the spaces, the space positioned between the first distribution rib and the reaction gas supply manifold hole is considered as a diffusion space, and an average of sectional areas of the diffusion space, the sectional areas taken along the longitudinal axis of the reaction gas channel and along the normal to the separator's surface, is larger than a sectional area of any of the slits of the first distribution rib, the sectional area taken along the longitudinal axis of the distribution rib and along the normal to the separator's surface. | 08-25-2011 |
20130157160 | POLYMER ELECTROLYTE FUEL CELL - A polymer electrolyte fuel cell comprises a plurality of stacked cells each having an ionic conductive electrolyte membrane, an anode placed on one side of the electrolyte membrane, a cathode placed on the other side of the electrolyte membrane, and a conductive separator on which a first refrigerant channel for flow of a refrigerant is formed in center part thereof. The separator comprises a penetration holes constituting a manifold which extend in a direction of stacking of the plurality of cells and through which the refrigerant flows, a second refrigerant channels for communication between the penetration holes and the first refrigerant channel, and a plurality of protrusions that protrude into the penetration holes from parts of wall surfaces of the penetration holes that located peripherally in connection parts between the penetration holes and the second refrigerant channels. | 06-20-2013 |
Patent application number | Description | Published |
20100030658 | AUTOMATIC AUCTION METHOD AND SYSTEM ON SERVER-CLIENT SYSTEM - An automatic auction method which makes it unnecessary for bidders to stay before auction terminals at the time of auction and which makes possible auction transactions on an open network on which it is difficult to assure the on-line and real time properties. A plurality of auction ordering information pieces each containing a desired price, number of purchase, and a highest possible price in competition for the desired price and received from bidder terminals via on-line circuits are collected. Until an auction issue appears, the price is lowered. If there is at least one auction issue and a desired quantity which is the sum total of the numbers of purchase of the auction issues is not satisfied, then it is determined whether there is an auction issue coinciding in price by comparing the set price with (the desired price+the highest possible price in competition). Until the desired quantity is satisfied, the price is raised. | 02-04-2010 |
20100188156 | OSCILLATOR CIRCUIT - There is provided an oscillator circuit including: a current source; a resonant unit; an oscillation amplification unit connected to the current source and connected in parallel to the resonant unit; a feedback resistor connected in parallel to the oscillation amplification unit; a switch unit having a first end connected to the current source side of the oscillation amplification unit; a replica circuit connected between a second end of the switch unit and a ground side of the oscillation amplification unit and having a configuration identical to a configuration of the oscillation amplification unit; and a level detecting unit that detects an input voltage of the oscillation amplification unit, and, when the detected input voltage is higher than a bias voltage level at a time of oscillation, cause the switch unit to allow a current from the current sources to bypass through the replica circuit. | 07-29-2010 |
20100188159 | OSCILLATOR CIRCUIT - There is provided an oscillator circuit including: a current source; a resonant unit; an oscillation amplification unit connected to the current source while being connected in parallel to the resonant unit; a feedback resistor connected in parallel to the oscillation amplification unit; a bypass resistor having a resistance lower than a resistance of the feedback resistor; a switch unit connected between the feedback resistor and the bypass resistor, and configured to switch to the feedback resistor or the bypass resistor; and a control unit configured to control the switch unit such that a current from the current source is bypassed to the bypass resistor during a predetermined oscillation starting period, and to control the switch unit such that the current from the current source flows to the feedback resistor after the predetermined oscillation starting period has ended. | 07-29-2010 |
20100277987 | SEMICONDUCTOR DEVICE AND CONTROL METHOD THEREOF - Systems and methods for programming data to a memory device (MD). The methods involve receiving the data at MD ( | 11-04-2010 |
Patent application number | Description | Published |
20080298136 | ENHANCED ERASING OPERATION FOR NON-VOLATILE MEMORY - Structures, methods, and systems for enhanced erasing operation for non-volatile memory are disclosed. In one embodiment, a semiconductor device which comprises a memory cell array having a plurality of non-volatile memory cells, a negative voltage generating circuit for applying a negative voltage to a word line of the memory cell array during an erasing operation of the memory cell array, and a positive voltage generating circuit for applying a positive voltage to a well of the memory cell array when the negative voltage reaches a predetermined voltage. | 12-04-2008 |
20090153125 | ELECTRONIC CIRCUIT - An electronic circuit is disclosed. The electronic circuit includes a bandgap circuit provided with first and second bipolar transistors that are coupled at a first node and a current mirror circuit provided with third and fourth transistors with respective control terminals coupled at a second node. The electronic circuit further includes a fifth transistor that is bipolar which is coupled to an output terminal of the third transistor where a base of the fifth transistor is coupled to a collector of the second transistor and a sixth transistor that is bipolar that is coupled to an output terminal of the fourth transistor with a base of the sixth transistor coupled to the first node. A control circuit controls a current provided to the bandgap circuit based on an output of the current mirror circuit. A reference voltage output terminal is provided between the control circuit and the bandgap circuit and outputs a reference voltage. | 06-18-2009 |
20140043073 | CLOCK SYNCHRONIZATION CIRCUIT AND SEMICONDUCTOR DEVICE - A clock synchronization circuit is configured to capture an input data bit according to an input clock signal, and to synchronize and output the input data bit. The clock synchronization circuit includes a clock buffer for generating an internal clock signal according to the input clock signal and transmitting the internal clock signal to a clock line. The clock synchronization circuit further includes a D flip-flop for capturing and outputting the input data bit at an edge timing of the internal clock signal. The clock buffer includes an inverter core portion and an electric current suppressing portion. The inverter core portion is configured to generate the internal clock signal through alternately supplying an electric current to the clock line and drawing the electric current from the clock line according to the input clock signal. The electric current suppressing portion is configured to suppress an amount of the electric current. | 02-13-2014 |
20140142812 | AIRBAG CONTORL UNIT - An airbag ECU includes a voltage detection section that detects a voltage in a power supply supplied to other control units (for example, front passenger seat occupancy sensing ECU). In addition, the airbag ECU includes a timer that measures an elapsed time after the voltage detected by the voltage detection section falls in a preset voltage range and a recording section that records the elapsed time measured by the timer on a memory when a failure of the other control units is detected. | 05-22-2014 |